US 5,211,316 AGranted

Dual-chamber package

AssigneesCoster Tecnologie Specialis p.a., S. C. Johnson & Son, Inc.

InventorsGeier Adalberto, Karl A. Kohler

Life of this patent

Estimating the term…

Loading patent…

Abstract

A dual-chamber package comprising a substantially dimensionally stable outer container (1) with a dispensing valve (2) for accommodating liquid or pasty contents and an inner container disposed within the outer container (1) for receiving a pressurized gas such as pressurized air or the like, wherein the inner container (3) is a flexible bag and wherein the dispensing valve (2) comprises a dispensing tube (17) disposed within a valve body (14) for movement from a closed position to an open position and vice versa. To simplify the design, increase the operational safety and attain improved ecological compatibility, the inner bag (3) is connected to the dispensing valve (2) and adapted to be filled therethrough with pressurized gas when the outer container (1) has been filled and closed, so that with the dispensing valve (2) in the open state the contents can be ejected from the outer container (1) while the inner bag (3) expands correspondingly.

Claims15

Dependent claims

A dual-chamber package having a substantially dimensionally stable outer container (1) with a container bottom and a dispensing valve (2) for holding and dispensing a flowable medium including liquid or pasty contents and an inner container disposed in the outer container (1) for receiving a pressurized gas, said inner container (3) being a flexible inner bag and said dispensing valve (2) including a dispensing tube (17) disposed within a valve body (14) for movement from a closed position to an open position and vice versa, comprising the improvement wherein said inner bag (3) is connected to the dispensing valve (2) and filled therethrough with said pressurized gas with said outer container (1) filled with said flowable medium and closed, said dispensing valve (2) having a control for opening the valve and discharge said flowable medium from the outer container (1) in response to expansion of said inner bag (3) and said inner bag (3) including sheet material folded upon itself to form sidewalls having side edges (7,8) and having a folded bottom end constructed and arranged to form a substantially flat bag bottom (5) extended across the container bottom (4), said inner bag having at least one sealed portion (13) connecting said sidewalls and extending from an upper end of said inner bag facing the dispensing valve (2) towards the folded bottom end and located between the edges (7, 8) of said bag to form a releasably sealed joint (13), said sealed joint (13) having a strength to hold said sidewalls together and cause said folded bottom end to form said flat bag bottom (5) in response to initial introduction of said gas into inner bag and subsequently releasing said sidewalls.

A dual-chamber package having a substantially dimensionally stable outer container (1) and dispensing valve (2) for holding and dispensing a flowable medium including liquid or pasty contents, an inner container (3) disposed in the outer container (1) for receiving a pressurized gas, said inner container (3) being a flexible inner bag and said dispensing valve (2) including a dispensing tube (17) disposed within a valve body, said valve body (14) mounted in sealed relationship within said outer container (1) and extending into the inner bag (3), said valve body including a filling opening (16) which opens into the interior of the inner bag (3) for filling of the inner bag with the pressurized gas through said dispensing valve (2), a closure member (18) for closing said filling opening (16), said valve body includes a through-opening (20) communicating the interior of the outer container (1) with the interior of the valve body (14) and said dispensing tube (17), said closure member (18) having an initial position for filling the inner bag (3) with the pressurized gas through said filling opening (16) and a second position closing said filling opening (16), said closure member (18) in said initial position closing said through-opening (20) to close fluid communication between the interior of the outer container (1) and the dispensing tube (17) of the dispensing valve (2) while the inner bag (3) is filled with pressurized gas and said closure member (18) in said second position opening said through-opening (20) and closing said filling opening (16), and said dispensing tube being operable to move the closure member to the second position.

Dependencies are inferred from the claim text.